Pump



Feb. 23 1926. 1,574,292

F. c. KELLEY PUMP Filed July 8, 1924 IN1/EN 0R, v Wan/f C. Kelley;

l A TTORNEYS,

Patented Feb. 23, 1926.

UNITED STATES amm Pa'relurl oFFicE.

FRANK C. KELLEY, OF LONG BEACH, CALIFORNIA, ASSIGNOR OF ONE-HALF W.RIGGLE, OF LOS ANGELES, CALIFORNIA.

T0 ELMER PUMP.

Application filed July 8,

To all whom 'Zt may concern:

Be it known that I, FRANK C. KELLLEY,

a citizen of the United States, residing `at Long Beach, in the countyof Los Angeles and vState of California, have invented new and usefulImprovements in Pumps, of which the following is a specification.

This invention relates to pumps, and it has for objects the provision ofan im` proved pump which will be superior in. point of simplicity,ineiqoensiveness,l durability and general serviceability. The pumpparticularly has to do with that type of pump in which a hollow plungeris adapted for reciprocation within a working barrel, the plunger beingin close working fit with such working barrel, it being intended by theinvention to lubricate the co-acting working surfaces of the plunger andthe working barrel and likewise to prevent sand or other detritus ordeleterious substances from in-any manner sanding up the plunger duringa pumping action.

The invention consists in the novel and useful provision, formation,construction, association, relative arrangement, of parts, members andfeatures, as well as the method of use of such parts, members andfeatures,

all as disclosed in certain of its embodiments in the accompanyingdrawing, described generally and more particularly pointed out inclaims.

. In the drawing:

Figure 1 is a fragmentary side elevation showing a portion of a wellderrick and pumping elements thereon. as well as a string of casingreaching down to oil-bearing sand, the casing including within itslength the novel invention;

Figure 2 is a fragmentary longitudinal cross sectional view, on anenlarged scale, illustrating features of the invention;

Figure 3 is a fragmentary longitudinal sectional view on an enlargedscale illustrating specific features associated with the working valve;

Figure 4 is a fragmentarv cross sectional .view on the line 4--`4-ofFigure 3; and,

Figure 5 is a bottom view of a member embodyinga feature of theinvention, and through which member oil Iis forced.

Referring with particularity to the drawing. the improved pump isdesignated as an entirety and in oneembodiment-*by A, a derrick byB-upon which is mounted pump- 1924. serial No. 724,776.

ing means C, and at one side of such derrick, means D for supplyingfluid under pressure to certain portions of the pump. In accordancewiththe invention the pumping means C `may include a Walking beam 1secured to the pump rod 2, which pump' yfoot of such working barrel is aunion d adapted to carry the standing valve e. The working barrel'isconnected by a union f to casing 4'. The pump tubing 2 is hollow, and isordinarily known as a hollow sucker rod, and such sucker rod or hollowpump tubing may be screw-threaded to amember g which is associated withthe working valve a. This member g is of cage-like formation, in that itincludes an annulus 5 provided with screw threads 6 and `with acentrally disposed peripheral groove 7 Adapted to be attached to suchannulus are two leg members 8 and 9 carrying at their upper extremitiesa curved member 10 provided with a curved chamber 11 the wallvsurrounding which bears screw threadsand which screw threads areadapted to engage with screw threads on the extremity of the sucker rodor pump tubing 2, all as illustrated in Figure 2 at 12. The two legs areprovided with ports 13 and 14 respectively communicating with thechamber in the member 10 and with the groove 7 as illustrated in Figure3. The side walls of the legs taper from the annulus 5 upwardly andinwardly as illustrated at 15 so as to present a space between such legsand the inner surface of a tubular member h, which tubular! member isscrew-threaded as at 16 to the working valve a, and the externaldiameter of such tubular member 7L is such as to present a small spacebetween its periphery and the inner surface of the working barrel, asillustrated at 17. The tubular member h is provided with one or moretransverse ports 18 which, when said member is in screw-threadedengagement with the working valve a, will register with the' peripheralgroove 7 on the member g. From the description just given it is evidentthat if fluid were forced through the pump tubing 2 it would be forcedthrough the ports 13 and 14 1n the legs 8 and 9 respectively, and intothe peripheral groove 7 and from thence out through the ports 18 andinto the space 17 included between the member I1, and the pump barrel.The working valve includes a tubular member 20 carrying a part 21 formedwith an opening 22 therein, and a ball valve 23 adapted to seat at theopening of such member 21. A coupling 24 connects such part 20of theworkmg valve .a with the plunger b, which plunger, as has been stated,is of the hollow type. The lowermost extremity of such plunger carriesan internal ring 25, and a Garbut rod 26 associated with the standingvalve is passed up within the hollow plunger, and when it is desired topull the pump -for an v reason whatsoever, a T carried by/suchv rod willcontact with the ring 25 and pull the standing valve from the member d.It is noted that the two legs 8 andf) are spaced apart and that oilpumped past the standing and working valves resultant upon reciprocationof the plunger will be passed through the central opening 30 in theannulus 5 and through the space included between the legs 8 and 9 andinto the space included between the pump tubing 2 and the inner surfaceof the tubular member 7L, and from thence into the casing 4, on up tothe surface of the well; from thence it is conducted through means asillustrated at 31 to a sump or storage tank. In order to keep sand fromcollecting above the plunger resultant upon a pumping, fresh oil isforced under pressure or by gravity from the device D through a suitablepipe 32 down the pump tubing 2 to where it is passed into the spaceincluded between the tubing 7L and the inner surface of the workingbarrel, and the pressure of the oil forced from between the surfaces ofthe last named members is sufficient to keep the oil being pumped andwhich is heavy laden from sand. from entering between such tubularmember and the working surface of the barrel` so that-the plunger at al1times contacts with a lubricated surface and does not have to contactwith sand, which of course allows a close fitting` plunger and one inwhich freezing is completely overcome. The inventor is aware that thereare now on the market certain pumps designed to overcome the effect ofsanding up and freezing, but such pumps must employ, because of theirconstruction, a loose fitting plunger with resultant loss in the pumpingefiiciency.

A back pressure valve j is included within the chambered portion of the`member 10 and the said valve includes a housing 40 provided with acentral port 41 and two branchports 42v and 43 opening from such.central port and in direct communication with the ports 13 and 14. Aball valve member 44 is adapted to close the port 41 at its zone ofassociation with the ports 42 and 43, such ball valve 44 seating againstl the wall surrounding the port, such seating being accomplished bymeans of a spring 45 having means 46 for regulating tension. Thus oilmay be passed through the port 41 from the pump tubing 2 and into theports 42 and.43, but back pressure of the oil upwardly within the ports42 and 43 is prevented by the ball valve'seating and preventingsuch'back flow of the oil. It is simply a difference of cross sectionalareas, as the pressure exerted by the oil or other fluid forced throughthe pump tubing and outwardly as between the member h and theinnersurface of the working barrel is great enough to prevent the oil beinglifted from the oil-bearing sand from entering therebetween Vandconsequently sand is prevented from entering such space 17. The union dof course is connected with a perforated casing 50 received within ascreen 51 in the oil-bearing sands. The working valve n. likewiseincludes the usual stop pin 52 limiting the upward play of the ball 23.

It isl obvious that various changes and modifications and variations maybe made in practicing the invention, in departure from the particularshowing, without departing from the true spirit of the invention.

Having thus disclosed my invention, I claim and desire to secure byLetters Patent:

1. In a pump of the character disclosed, a working valve, an annularplunger carried by the working valve at one end thereof, and a tubularmember carried by the said working valve at the other end thereof; saidworking valve permitting communication" between the annular plunger andthe tubular member during certain movement thereof: a working barreladapted to confine thc plunger, working valve and tubular member; anannulus within the tubular member and pump tubing secured to saidannulus, and in part confined in the tubular member, said annulus beingformed with a port of communication with said pump tubing, and saidtubular member being formed with a port in communication with the portin the annulus.

' 2. In a pump of the character disclosed, an annulus formed with a legportion having a port there'n, a socket portion joined with the legportion and in communication with the port, and valve means closingentrance between'the socket portion and the port of the leg portion.

3. In a pump of the character disclosed, an annulus formed with two legportions, and a member carried by the leg portions, said member beingformed with a socket portion, said leg portions being provided withports extending to the socket portion, with ports extending to thesocket portion, and valve means .within the socket portion and valvemeans within the socket portion normally closingcommunicaton between thenormally closing communication between ports in the leg portions andsuch socket the ports in the leg portions and such socket 5 portion.portion; said annulus being provided with a 15 4. In a pump of thecharacter disclosed, peripheral groove and said ports in the leg anannulus formed with two leg portions, portions communicating with saidgroove. and a member carried by the leg portions, In testimony whereof,I have signed my said members being formed with a socket name to thisspecification.

l0 portion, said leg portions being provided FRANK C. KELLEY.

